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The Info List - Australasian Ecozone





The Australasian realm
Australasian realm
is an biogeographic realm that is coincident, but not synonymous (by some definitions), with the geographical region of Australasia. The realm includes Australia, the island of New Guinea (including Papua New Guinea
New Guinea
and the Indonesian province of Papua), and the eastern part of the Indonesian archipelago, including the island of Sulawesi, the Moluccan islands (the Indonesian provinces of Maluku and North Maluku) and islands of Lombok, Sumbawa, Sumba, Flores, and Timor, often known as the Lesser Sundas. The Australasian realm
Australasian realm
also includes several Pacific island groups, including the Bismarck Archipelago, Vanuatu, the Solomon Islands, and New Caledonia. New Zealand and its surrounding islands are a distinctive sub-region of the Australasian realm. The rest of Indonesia
Indonesia
is part of the Indomalayan realm.[1] From an ecological perspective the Australasian realm
Australasian realm
is a distinct region with a common geologic and evolutionary history and a great many unique plants and animals. In this context, Australasia
Australasia
is limited to Australia, New Guinea, New Zealand, New Caledonia, and neighbouring islands, including the Indonesian islands from Lombok
Lombok
and Sulawesi
Sulawesi
eastward. The biological dividing line from the Indomalayan realm of tropical Asia
Asia
is the Wallace Line: Borneo
Borneo
and Bali
Bali
lie on the western, Asian side. Australia, New Zealand
New Zealand
and New Caledonia
New Caledonia
are all fragments of the ancient supercontinent Gondwana, the marks of which are still visible in the Christmas Island Seamount Province and other geophysical entities. These three land masses have been separated from other continents, and from one another, for tens millions of years. All of Australasia
Australasia
shares the Antarctic flora, although the northern, tropical islands also share many plants with Southeast Asia. Australia, New Guinea, and Tasmania are separated from one another by shallow continental shelves, and were linked together when the sea level was lower during ice ages. They share a similar fauna which includes marsupial and monotreme mammals and ratite birds. Eucalypts are the predominant trees in much of Australia
Australia
and New Guinea. New Zealand has no native land mammals, but also had ratite birds, including the kiwi and the moa. The Australasian realm
Australasian realm
includes some nearby island groups, like Wallacea, the Bismarck Archipelago, Solomon Islands, and Vanuatu, which were not formerly part of Gondwana, but which share many characteristic plants and animals with Australasia. Note that this zonation is based on flora; animals do not necessarily follow the same biogeographic boundaries. In the present case, many birds occur in both "Indomalayan" and "Australasian" regions, but not across the whole of either. On the other hand, there are few faunistic commonalities shared only by Australia
Australia
and New Zealand, except some birds. Meanwhile, Australia, Melanesia and the Wallacea
Wallacea
are united by a large share of similar animals, but few of these occur farther into the Pacific. On the other hand, much of the Polynesian fauna is related to that of Melanesia. See also[edit]

Australasia Oceania

References[edit]

^ " Australasia
Australasia
ecozone". World Wildlife Fund. Archived from the original on 2006-10-07. 

External links[edit]

Wikimedia Commons has media related to Australasia.

Wikivoyage has a travel guide for Australasian wildlife.

Panda.org: Map of the Ecozones

v t e

Biogeographic regionalisations

Biomes

Terrestrial biomes

Polar/montane

Tundra Taiga Montane grasslands and shrublands

Temperate

Coniferous forests Broadleaf and mixed forests Deciduous forests Grasslands, savannas, and shrublands

Tropical and subtropical

Coniferous forests Moist broadleaf forests Dry broadleaf forests Grasslands, savannas, and shrublands

Dry

Mediterranean forests, woodlands, and scrub Deserts and xeric shrublands

Wet

Flooded grasslands and savannas Riparian Wetland

Aquatic biomes

Pond Littoral Intertidal Mangroves Kelp forests Coral reefs Neritic zone Pelagic zone Benthic zone Hydrothermal vents Cold seeps Demersal zone

Other biomes

Endolithic zone

Biogeographic realms

Terrestrial

Afrotropical Antarctic Australasian Nearctic Palearctic Indomalayan Neotropical Oceanian

Marine

Arctic Temperate Northern Pacific Tropical Atlantic Western Indo-Pacific Central Indo-Pacific Tropical Eastern Pacific

Subdivisions

Biogeographic provinces Bioregions Ecoregions

List of ecoregions Global 200
Global 200
ecoregions

See also

Ecological land classification Floristic kingdoms Vegetation
Vegetation
classifications Zoogeogra

.